CONCORD - Two teenage girls are under arrest, accused of forcing their way into an Elm Street residence and assaulting a mother, her teenage daughter and the daughter's friend.

The home invasion happened about 2:30 a.m. Sunday.

Lt. Timothy O'Malley, who would not disclose the address because he said the investigation is ongoing, said the mother woke up when she heard pounding on the door. When she answered it, two teenage girls forced their way inside while demanding to see her daughter and the other teen, both minors.

The girls pushed the mother aside and headed to the bedroom where they attacked the teen girls, kicking and punching them. One was also choked, O'Malley said.

On Tuesday, police arrested Taylor Wilkins, 17, of Route 129, Loudon, and a 15-year-old Loudon girl. Wilkins is charged with second-degree assault, three counts of simple assault, burglary, obstructing the report of a crime and criminal mischief. The 15-year-old is charged with second-degree assault, six counts of simple assault, burglary and criminal threatening.

O'Malley said two of the three victims suffered serious, but not life-threatening, injuries. Wilkins is accused of causing a serious injury to one of the teens, while police said the 15-year-old tried to strangle one of the teenage girls.

The home invasion was not a random incident, O'Malley said, and the teenagers had a "past issue." Asked why the attack happened, O'Malley said investigators are "still sorting that out."

What's next: Wilkins is being arraigned Wednesday in 6th Circuit Court, Concord District Division. The 15-year-old is being detained, pending arraignment in Juvenile Court.